////////////////////////////////////////////////////////////////////////////////
// This file is part of the Mist compiler.                                    //
//                                                                            //
// Copyright (C) 2009 The Mist project                                        //
//                                                                            //
// For a list of contributors, see the COMMITTERS file.                       //
//                                                                            //
// The Mist compiler is free software: you can redistribute it and/or modify  //
// it under the terms of the GNU General Public License as published by       //
// the Free Software Foundation, either version 3 of the License, or          //
// (at your option) any later version.                                        //
//                                                                            //
// The Mist compiler is distributed in the hope that it will be useful,       //
// but WITHOUT ANY WARRANTY; without even the implied warranty of             //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              //
// GNU General Public License for more details.                               //
//                                                                            //
// You should have received a copy of the GNU General Public License          //
// in the COPYING file. If not, see <http://www.gnu.org/licenses/>.           //
////////////////////////////////////////////////////////////////////////////////

///
/// \file
/// Contains the find_symbol_references function.
///

#ifndef FIND_REFERENCES_HPP
#define FIND_REFERENCES_HPP

////////////////////////////////////////////////////////////////////////////////
// Includes                                                                   //
////////////////////////////////////////////////////////////////////////////////

#include <set>
using std::set;

#include "common/ptr.hpp"
#include "symbol.hpp"

////////////////////////////////////////////////////////////////////////////////
// Forward Declarations                                                       //
////////////////////////////////////////////////////////////////////////////////

class Node;

////////////////////////////////////////////////////////////////////////////////
// find_references Function                                                   //
////////////////////////////////////////////////////////////////////////////////

/// \return the symbols to the references contained within \a tree
///
set<wptr<Symbol> > find_references(wptr<Node> tree);

#endif // FIND_REFERENCES_HPP
